What Causes Delayed Period After Taking Unwanted And Mifepristone?

hello mam i took this tablet(unwanted and mifepristone) last month and immediately after 4 days i got my periods but it was unsual and i had very heavy periods too..this month i didnt get periods at all instead i am getting bleeded with two to three drops per day..is that ok wats the reason y i dont get my periods properly..any remedies please